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-rw-r--r--src/render/Sprite.cpp13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/render/Sprite.cpp b/src/render/Sprite.cpp
index ba6ab291..0e4d4fcd 100644
--- a/src/render/Sprite.cpp
+++ b/src/render/Sprite.cpp
@@ -10,6 +10,19 @@ float CSprite::m_f2DFarScreenZ;
float CSprite::m_fRecipNearClipPlane;
int32 CSprite::m_bFlushSpriteBufferSwitchZTest;
+float CalcScreenZ(float z)
+{
+ // LCS TODO: check
+
+ if ( z == 0.0f )
+ return CSprite::GetNearScreenZ();
+
+ return (z - CDraw::GetNearClipZ())
+ * (CSprite::GetFarScreenZ() - CSprite::GetNearScreenZ()) * CDraw::GetFarClipZ()
+ / ( (CDraw::GetFarClipZ() - CDraw::GetNearClipZ()) * z )
+ + CSprite::GetNearScreenZ();
+}
+
float
CSprite::CalcHorizonCoors(void)
{